Short answers, pulled from the story.
Leopold Anton Eleutherius Freiherr von Firmian entered the world on the 11th of March 1679 in Munich. He was the son of Baron Franz Wilhelm von Firmian and Countess Maria Viktoria von Thun und Hohenstein.
On the 31st of October 1731, Firmian signed an Edict of Expulsion that demanded all Protestants recant their beliefs or be banished from the region. This decree led to the exile of over twenty thousand subjects who were sent to locations such as East Prussia, Hanover, and Georgia.
Firmian held the title of Archbishop of Salzburg from his election on the 4th of October 1727 until his death on the 22nd of October 1744. His tenure spanned nearly two decades during which he enforced strict Catholic conformity across the territory.
Schloss Klessheim stood finished under Firmian's direction while construction began on Schloss Leopoldskron for his nephew Franz Laktanz Firmian. He also had the Kapitelschwemme redesigned alongside the Marstallschwemme to reflect his desire to restore Catholic grandeur through physical structures.
The body of Archbishop Firmian rests in the Salzburg Cathedral crypt after his death on the 22nd of October 1744. His heart lies separately under the floor of the chapel at Schloss Leopoldskron where it remains a distinct part of his burial arrangement.